CMMVC8264E The command failed because the volume associated with a file system and only the real capacity of a compressed file system volume can be changed.
Explanation
You are attempting to resize a volume that is associated
with a file system. However, you can only resize the real capacity
of a file system volume if it is compressed.
User response
The command cannot be completed on this volume. It will only succeed with a volume that is not associated with a file system or a with a compressed file system volume.